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Maths Puzzle
Numerical Ability
22 is 80% of what?/ 32 is whatt percent of 56?/ and if x is 8 when y is 18, and x and y vary directly, what is the value of y when x is 10?
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book Other Question
what does x equal in this equation?
-2w+4=-8
Here I need to factor the quadratic expression completely, and find the roots of the expression.
135x^2 - 222x + 91